Stop means for feed roll units



June 14, 1949. A. E. WINSLOW ETAL 2,472,966

STOP MEANS FOR FEED ROLL UNIT S Filed May 2, 1946 4 Sheets-Sheet 1 INVENTORS Jib era/ E. VL v'ns/aw Eugene E a a/ef B I J n 14, 949- A. E. WINSLOW ETAL 2,472,966

STOP MEANS FOR FEED ROLL UNITS 4 Sheets-Sheet 2 Filed May 2, 1946 June 14, 1949. A. E. WINSLQW ETAL STOP MEANS FOR FEED ROLL UNITS 4 Sheets-Sheet 3 Filed lay 2, 1946 J%er/ mv NTORS Eugene fi/ w lzuxi/fi /Lw ATTORNEYS June 14, 1949. A. E- WINSLOW EI'AL 2,472,966

STOP MEANS FOR FEED ROLL UNITS Filed May 2, 1946 4 Sheets-Sheet 4 iii/W $49144 lh-romvevs.

.Fune i STOP MEANS FOR FEED ROLL UNITS Albert E. Winslow, Norwich, and Eugene Eppler,

Stonington, Conn., assignors, by mesne assignments, to Universal Winding Company, Cranston, R. I., a corporation of Massachusetts Application May 2, 1946, Serial No. 666,727

8 Claims. (CI. 57-83) 1 This invention relates to feed rolls for feeding yarn in a textile apparatus. It is particularly designed for use on a twisting frame.

In the use of a feed roll for feeding yarn in such places as on a twisting frame, it has been usual to stop the action of the feed roll when any one of the ends breaks by moving the feed roll itself so that it is lifted out of driving engagement with some means for driving the same.

In many instances, such movement causes other yarn ends to break, in addition to the yarn end which has been broken, because of such action. In some cases, slack appears in the yarn which is undesirable from the standpoint of uniform yarn, particularly in a twister.

One of the objects of this invention is to provide a feeding unit which will be individual for each of the plied yarn ends and to so arrange this unit that, if one yarn end breaks, the unit will become inoperative, while other similar units on the frame will continue to operate.

Another object of this invention is to provid a feeding means which will maintain the feed rolls the same distance from the take-up package at all times, and thus prevent any slack occurring in the yarn between the feed rolls and the supply package when one of the yarn ends breaks.

Another object of this invention is to provide a unit which will be entirely contained within a casing with all operating parts completely housed therein, and which unit may be disconnected from the apparatus or mounted on the apparatus as a unit.

Another object of this invention is to provide a feeding unit which will maintain itself fixed on the frame of the apparatus which supports the working parts of the whole structure.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is an elevation of the upper part of a twisting frame showing my invention as applied thereto:

Fig. 2 is a sectional view showing the feed rolls in operating position;

Fig. 3 is a view similar to Fig. 2 showing the feed rolls in inoperative position;

Fig. 4 is a top plan view of the unit;

Figs. 5 and 6 are fragmental sectional and plan views illustrating the means for disconnecting the drive of the take-up spindle from its driving belt.

same.

Fig. 7 is a fragmental face view of a part of a frame showing one unit of the apparatus.

In proceeding with this invention, we provide a unit containing feed rolls for the yarn, with a means consisting of gears on the axes of the feed rolls for driving the same while another gear is movable into and out of engagement with one of the gears on the feed rolls, for driving or disconnecting the drive from the power shaft to the A control means is provided which is driven by the yarn which is fed, so that upon breaking of the yarn forces are brought into action to disconnect the driving gear from driving the feed rolls. By this arrangement, the feed rolls are maintained in a fixed relation to a take-up package and no slack can occur between the feed rolls and the take-up package because the axes are a constant distance apart. To move this gear out of engagement, a latch is tripped, and, as the gear is drawn out of engagement, a plunger operates to also move the take-up spindle from its driving relation to its drive belt, so that the takeup spindle is also rendered inoperative.

With reference to the drawings, a part of a twisting frame which is pertinent to this invention is illustrated in Fig. 1, wherein there is shown a post ill, which is mounted on a frame Ii for the back to back mounting of operating parts of the machine and which in turn mounts a bracket i2 also for supporting in back to back relation the individual feeding and guiding yarn end mechanisms. A further bracket i3 is mounted above this bracket i2 for the support of certain trip mechanism for the stop motion operation.

Each spindle assembly is mounted on a fixed spindle rail 21 which is a part of the framework of the machine. Separators 28 are positioned between the spindles so as to prevent the engagement of the balloon of the yarn about one spindle with the yarn which balloons about another spindle. The spindle 20 has a whorl 2|, and is mounted on a swinging arm 22 (see Fig. 6), which is swung by a concealed spring in a housing 23 into engagement with a belt 24. A brake 25 is so positioned that the arm 22 may cause the whorl 2| to be swung into engagement therewith when removed from driving engagement with the belt 24. A back-up roll 28 (Fig. 1) is provided adjacent to belt 24 for supporting the same in position. Rod guides I4 and I5 guide the ring rail lift rod IS in its reciprocating motion, which rod carries the thread board guide l1 and the ring rail'lB for reciprocating movement in the building of the take-up package. A ring is designated 29 and is provided with a traveler 30 through 3 which the yarn passes in being directed to the package on the. spindle 20.

A plurality of yarn ends 3| are drawn from supply packages and each passes through an eye 32 which is mounted on an arm 33, pivoted as at 34, and then the group which are to be plied or twisted together pass through the fixed pigtail guide 35 and extend about the feed rolls in the unit 36 and thence through the pig-tall guide 31 on the thread board I! and then to the traveller 35.

The tension of each yarn 3i acting on the guide 32 is such that the arm 38 is held forward, and, as this arm is L-shaped, being weighted as at 38 (see Fig. 2) should the yarn break, arm 33 would move rearwardly, or counterclockwise as shown in Fig. 2, about its pivot 34 to press upon the lever 39 (see Fig. 2) which is pivoted as at 40 and has a rod 4i extending downwardly therefrom to enter the feed roll unit 36 which is about to be described.

The feed roll unit 36 (see plan view in Fig. 4 and the sectional view in Figs. 2 and 3) has a pair of feed rolls 42 and 43 mounted on the side of the casing 44 which encloses the operating gear mechanism of the unit. A gear 45 is fixed on a shaft 45 which mounts the roll 42, and a gear 4! is fixed on shaft 48 which mounts the feed roll 43. These two gears are connected together by an idler 49 continually in mesh with both of them. The casing is fixed on the twisting frame and the bearing for the shafts 45 and 48 are fixed in the casing.

The drive shaft 50 extends through the casing N and has a driving gear 5i mounted on this shaft 50. A bracket 52 is rockably mounted on the shaft 50 with an arm 53 extending therefrom which carries an idler gear 54 which is in mesh with the gear 5i and may be moved by the bracket to and from engagement with the gear 45. This bracket is provided with another arm 55 on its opposite side to which there is pivotally connected a bar 56 having a handle 51 by which the bracket may be manually moved when desired.

The bracket 52 is held in the full line position as shown in Fig. 2 or in the dotted line position shown in Fig. 3 by a latch 50, which engages a catch 6| provided on the end of a bracket arm 62 pivoted on casing 44 as at 63 and provided with.

a roller 54. To release the latch, we provide a disk 65 rotating on the shaft 58 and provided with lobes 56 which will normally clear the roller 64, but when the arm 4| of the stop motion drops to its lower position, then the arm will be engaged by the lobe 66, which through the rod 4] will force against the roller 54 and cause the arm 52 to be moved from latched position as shown in Fig. 2.

Tension to pull the bracket 52 about its pivotal mounting on the shaft 50 when released so as to remove the gear 54 from connection with the gear 43 is provided by a cable 10, which extends out of the casing and downwardly about a drum H (see Fig. 5).

The cable 10 is attached to the bracket 52, which cable extends about a drum H (see Fig. 5) mounted on the end of a shaft 12 which has a bearing at 13 provided in the frame ii. The shaft 12 may slide axially of its bearing as well as rotate in the bearing. An enlarged head 14, fixed to the shaft 12, is provided With a slot 15 which receives a pin 16 fixed to the sleeve 11 which encircles the same, while a spring 18 engaging this head tends to slide the shaft 12 inwardly or to the right, as shown in Fig. 5. Any

. 4 axial movement to the right as shown in Fig. 5 will also cause a rotary movement so that the drum H will be turned. Thus, tension is applied to the cable 70, tending to swing the bracket 52 on the shaft 50.

As the shaft 12 moves to the right as shown in Fig. 5 its end I9 will engage the abutment on the arm 22 and move the spindle 20 from its position engaging the drive belt 24 away from this belt into engagement with the brake 25 to arrest movement of the take-up spindle. The bracket 52 is prevented from being swung by the cable Iii by reason of a latchfifl which is carried by the bracket and which engages a catch 6! on the bracket 52. In order to cause disengagement of the gears, the means heretofore described is provided to release the latch 60 and thus permit the bracket 52 to be swung by the cable for the withdrawal of the gear 5| from driving engagement with the gear 45. the Parts being moved to the position shown in Fig. 3.

We claim:

l. A yarn handling apparatus comprising a spindle for a take-up package, feed rolls for feeding yarn to the take-up package, a gear fixed on the axis of one of the feed rolls, a pivoted bracket carrying a second gear movable from driving to non-driving position with the first gear, means for driving said second gear, and means for moving said second gear to non-driving position upon breaking of the yarn end, including catch and latch means for holding said bracket in a position to hold the second gear in driving engagement with the first gear.

2. A yarn handling apparatus comprising a spindle for a take-up package, feed rolls for feeding yarn to the take-up package, a gear fixed on the axis of the feed rolls, a second gear movable from driving to non-driving position with the first gear, means for driving said second gear, and means for moving said second gear to non-driving position upon breaking of the yarn end, including a lobed disk on one of said gears and an arm to drop into the path of one of said lobes to be engaged and in turn move said second gear.

3. A yarn handling apparatus comprising a spindle for a take-up package, feed rolls for feeding yarn to the take-up package, a gear fixed on the axis of the feed rolls, a second gear movable from driving to non-driving position with the first gear, means for driving said second gear, and means for moving said second gear out of meshing relation upon breaking of the yarn end. including a lobed disk on one of said gears and an arm to drop into the path of one of said lobes to be engaged and in turn move said second gear, a pair of brackets with catch and latch for holding them in a position to hold the second gear in driving engagement with the roll gear.

4. A yarn handling apparatus comprising a spindle for a take-up package, feed rolls for feeding yarn to the take-up package, a gear fixed on the axis of one of the feed rolls, a second gear,

' means for mounting said second gear for rocking movement to and from driving position with said first gear, means for driving said second gear, and means for swinging said second gear out of driving position with said first gear upon breaking of the yarn end.

5. A yarn handling apparatus comprising a. spindle for a take-up package, feed rolls for feeding yarn to the take-up package, gears fixed on the axis of the feed rolls, a driving gear, an idler gear meshing with the driving gear, means for mounting said idler gear for rocking movement to and from driving position with a ieed roll gear, and means for rocking said idler gear out of driving position upon breaking of the yarn end.

6. A yarn handling apparatus comprising a spindle for a take-up package, feed rolls for feeding yarn to the take-up package, a gear fixed on the axis of one of the feed rolls, a driving gear, a bracket mounted for rocking movement about the axis of said drive gear, an idler gear carried by said bracket meshing with said drive gear and said first gear, said bracket being movable to move said idler gear to and from driving position with said first gear, and means for rocking said bracket for moving said idler gear to non-driving position relative to said first gear upon breaking of the yarn end.

7. A yarn handling apparatus comprising a spindle for a take-up package, feed rolls for feeding yam to the take-up package, a gear fixed on the axis of one of the feed rolls, a driving gear, a bracket mounted for rocking movement about the axis of said drive gear, an idler gear carried by said bracket meshing with said drive gear and said first gear, said bracket being movable to move said idler gear to and from driving position with said first gear, means urging said bracket to rock in a direction to move said idler gear to non-driving position relative to said first gear, releasable locking means for holding said bracket in position to hold said idler gear in driving position with said first gear and means tor releasng said locking means upon breaking of the yarn.

8. A yam handling apparatus comprising a spindle for a take-up package, feed rolls for feed-- ing yarn in the take-up package, a gear fixed on the axis of one of the feed rolls, a driving gear, a bracket mounted for rocking movement about the axis of said drive gear, an idler gear carried by said bracket meshing with said drive gear and said first gear, said bracket being movable to move said idler gear to and from driving position with said first gear, resilient means urging said bracket to rock in a direction to move said idler gear to non-driving position relative to said first gear, releasable locking means for holding said bracket in position to hold said idler gear in driving position with said first gear and means for releir said locking means upon breaking of the yarn.

ALBERT E, WINSLOW. EUGENE EPPLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,938,504 Thomas Dec. 5, 1933 FOREIGN PATENTS Number Country Date 363,072 Great Britain Dec. 17, 1931 363,073 Great Britain Dec. 17, 1031 

